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package DAO;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author admin-pc
 */
public class ConnectionFactory {

    String driverClassName = "oracle.jdbc.driver.OracleDriver";
    String connectionUrl = "jdbc:oracle:thin:@localhost:1521:XE";
    String dbUser = "andy";
    String dbPwd = "123";

    private static ConnectionFactory connectionFactory = null;

    private static Logger log = Logger.getLogger(ConnectionFactory.class.getName());

    private ConnectionFactory() {
        try {
            Class.forName(driverClassName);
        }
        catch (ClassNotFoundException e) {
            log.log(Level.SEVERE, "Exception: ", e);
        }
    }

    public Connection getConnection() throws SQLException {
        Connection conn = null;
        conn = DriverManager.getConnection(connectionUrl, dbUser, dbPwd);
        return conn;
    }

    public static synchronized ConnectionFactory getInstance() {
        if (connectionFactory == null) {
            connectionFactory = new ConnectionFactory();
        }
        return connectionFactory;
    }

}
